Nori algae vs. algae disc

[sunfun]

I found this on eBay and was wondering if this type of algae would support tangs, or for that matter if Nori was some special type of algae?

Algae Wafer

 

[sunfun]

How about this Algae?

 

[Serk]

Spirulina algae is very healthy... BUT, I believe it's a terresterial/fresh water based algae species... For marine-based animals, I think that marine based plant matter is better for them, it's what they've evolved to eat over the millenia...

 

[Rick]

@sunfun wrote:

That stuff for the most part is for freshwater fish, though saltwater fish might eat it. But it is really for bottom feeders, which tangs are not. Those little wafers would just end up on the bottom being eaten by crabs and snails.